Re: [Xen-devel] [PATCH 0/3] x86: S3 resume adjustments

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 14/04/18 06:49, Simon Gaiser wrote:
> Jan Beulich:
>> 1: correct ordering of operations during S3 resume
>> 2: suppress BTI mitigations around S3 suspend/resume
>> 3: check feature flags after resume
>>
>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
>>
>> Simon, could you give this a try please?
> Backported to 4.8 it works fine with the two fixes I sent earlier.
>
> I now also tried staging. Resume is broken even without IBRS/IBPB. It
> panics about a double fault somewhere after it starts to enable the
> non-boot CPUs. Since the IBRS/IPBP problem happens before that point I
> could test the patches anyway. With them it gets again to the point
> where it double faults. So the patches are most likely fine.
>
> I didn't really looked yet at the cause of the double fault.

Do you at least have the crash log from the attempt?

~Andrew

>
> Simon
>


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